The CCP has a huge incentive to have her come forward and make some kind of a statement that she's fine and that the outbreak has nothing to do with the lab/those are all rumors, similar to what the lead researcher Shi Zhengli did. The expected behavior if she were the target of a rumor that she was patient zero would be to squash it immediately in the strongest way possible, whether or not it were true. Huang Yan Ling making a statement and talking about that silly rumor would be the strongest way to squash that rumor.
The fact that has not happened suggests she isn't able to because she is no longer alive.
As to more generic comparisons about behavior during a natural virus vs an accidentally released virus, I don't have anything stronger than conjecture, but think a comparison to SARS would shed some light. Again, it is my understanding that during that outbreak, in which a natural virus hopped species, there was heavy handed action and repression of information about how bad things were getting, but that was after things had gotten bad. I don't believe there were doctors that were being silenced before the outbreak got severe. If you want to prevent the severity of a natural outbreak you need and want doctors to be jumping on the issue early, and I would imagine you would want to exaggerate the effectiveness of their early intervention rather than silence doctors trying to mount an early intervention.